+ /**
+ * Is the search limited to archived mailings.
+ *
+ * @param array $urlArguments
+ *
+ * @return bool
+ *
+ * @throws \CRM_Core_Exception
+ */
+ protected function isArchived($urlArguments): bool {
+ return in_array('archived', $urlArguments, TRUE) || CRM_Utils_Request::retrieveValue('is_archived', 'Boolean');
+ }
+